Alert archive / Tennessee / Mesoscale Discussions in 2003
Mesoscale Discussion 1001
The Storm Prediction Center issued this mesoscale discussion at May 15, 2003, 4:42 PM CDT for 15 counties in Kentucky; 47 counties in Tennessee. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- May 15, 2003, 4:42 PM CDT (21:42 UTC)
- Expired
- May 15, 2003, 5:45 PM CDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 62 counties
Allen County, KY, Caldwell County, KY, Calloway County, KY, Christian County, KY, Graves County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Monroe County, KY, Muhlenberg County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Anderson County, TN, Bedford County, TN, Benton County, TN, Bledsoe County, TN, Bradley County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Grundy County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Loudon County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, McMinn County, TN, Meigs County, TN, Montgomery County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Robertson County, TN, Rutherford County, TN, Sequatchie County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Weakley County, TN, White County, TN, Williamson County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 24 km from the middle of the area, began a volume at 21:44 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 9.7 hours before the alert went out and 18 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 663 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 8:15 PM CDT | Mesoscale Discussion | SPC | Crittenden, Henderson, Hopkins, Livingston, McLean, Union and 1 more | 60 min |
| May 14, 8:30 PM CDT | Severe Thunderstorm Watch | SPC | Caldwell, Crittenden, Livingston, Union | 4 hr |
| May 14, 9:24 PM CDT | Mesoscale Discussion | SPC | Carroll, Henry, Oldham, Trimble | 96 min |
| May 14, 10:10 PM CDT | Mesoscale Discussion | SPC | Ballard, Caldwell, Carlisle, Crittenden, Fulton, Graves and 5 more | 2 hr |
| May 15, 6:52 AM CDT | Mesoscale Discussion | SPC | Adair, Allen, Barren, Bell, Boyle, Breathitt and 68 more | 2 hr |
| May 15, 10:15 AM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bath, Boone, Bourbon, Boyle, Bracken and 53 more | 6 hr |
| May 15, 12:22 PM CDT | Mesoscale Discussion | SPC | Adair, Barren, Bell, Boyle, Breathitt, Casey and 37 more | 53 min |
| May 15, 12:50 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Barren, Bell, Boyle, Breathitt, Casey and 41 more | 5 hr |
| May 15, 2:20 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 90 more | 85 min |
| May 15, 5:10 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Christian, Logan, Monroe, Simpson, Todd and 1 more | 6 hr |
| May 15, 11:08 AM CDT | Mesoscale Discussion | SPC | Carter, Johnson | 2 hr |
| May 15, 3:10 PM CDT | Severe Thunderstorm Watch | SPC | Carter, Cocke, Greene, Hamblen, Jefferson, Sevier and 2 more | 6 hr |
| May 15, 5:06 PM CDT | Mesoscale Discussion | SPC | Carter, Cocke, Greene, Hamblen, Jefferson, Sevier and 2 more | 84 min |
| May 15, 6:39 PM CDT | Mesoscale Discussion | SPC | Sevier | 2 hr |
Nearby
Mesoscale Discussions in Tennessee, 2003Mesoscale Discussions in Kentucky, 2003Every mesoscale discussion in 2003
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.